While many people are experimenting with larger antennas, I wanted something very small and fast to deploy. Thus I spent a while today making a vertical for 40m that telescopes down to just 40cm. It is only 3m long when extended and I was rather dubious about how well it would perform. A quick CQ on 7.032 got an immediate reply from Nik HB9EAA who was followed by a DL station. Reports were good - especially considering the size of the atenna. I will post some pictures if the WX is fine tmw.
The idea is that this antenna can be used on those awkward summits where there is not enough room or too many people to make normal antennas useful. What do others use in such situations?